This chapter is an introduction to Drupal's architecture. Taking a developer's perspective, we examined the basic structure of Drupal. After that, we looked at some of the concepts and systems that will be important in this book.

Now that this preliminary chapter is done, we are going to shift focus. No more theory‑laden chapters and high-level explanations. From here on, our focus will be practical.

In the next chapter, we will build our first module—and no, it's not going to be a garden‑variety "Hello, World" module. We will use a remote XML-based API to fetch content and display it as a Drupal block. So strap yourself in, and let's get coding.